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- Stand 20. Oktober 2004 -
Patente: xxx.xxx.xxx.xxx
Sach-Nr. 89 900 7175
Mess- und Ortungstechnik Measuring and Locating Technologies
Leitungsortung Line Locating
Rohrleitungsnetze Water Networks
Kommunikationsnetze Communication Networks
Elektrizitätsnetze Power Networks
Issue: SebaKMTUK06101201
Operating Manual
TF10PP-640 Coupling Filter for Phase to Phase Fault Location
with Vloc
Pro cable locator system
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TF10PP Coupling Filter for Phase to Phase Fault Location with
Audio Frequency Generators
2
Consultation with SebaKMT
The present manual has been designed as an operating guide and
for reference. It is meant to answer your questions and solve your
problems in as fast and easy a way as possible. Please start with
referring to this manual should any trouble occur.
In doing so, make use of the table of contents and read the
relevant paragraph with great attention. Furthermore, check all
terminals and connections of the instruments involved.
Should any question remain unanswered, please contact:
Seba Dynatronic
Mess- und Ortungstechnik GmbH
Hagenuk KMT
Kabelmesstechnik GmbH
Dr.-Herbert-Iann-Str 6 D - 96148 Baunach
Phone: +49 / 9544 / 68 – 0 Fax: +49 / 9544 / 22 73
Röderaue 41 D - 01471 Radeburg / Dresden
Phone: +49 / 35208 / 84 – 0 Fax: +49 / 35208 / 84 249
E-Mail: [email protected] http://www.sebakmt.com
SebaKMT
All rights reserved. No part of this handbook may be copied by
photographic or other means unless SebaKMT have before-hand
declared their consent in writing. The content of this handbook is
subject to change without notice. SebaKMT cannot be made liable for
technical or printing errors or shortcomings of this handbook.
SebaKMT also disclaim all responsibility for damage resulting
directly or indirectly from the delivery, supply, or use of this
matter.
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TF10PP Coupling Filter for Phase to Phase Fault Location with
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SebaKMT-TF10PP-640-Draft-Manual-200709
Terms of Warranty
SebaKMT accept responsibility for a claim under warranty brought
forward by a customer for a product sold by SebaKMT under the terms
stated below.
SebaKMT warrant that at the time of delivery SebaKMT products
are free from manufacturing or material defects which might
considerably reduce their value or usability. This warranty does
not apply to faults in the software supplied. During the period of
warranty, SebaKMT agree to repair faulty parts or replace them with
new parts or parts as new (with the same usability and life as new
parts) according to their choice.
SebaKMT reject all further claims under warranty, in particular
those from consequential damage. Each component and product
replaced in accordance with this warranty becomes the property of
SebaKMT.
All warranty claims versus SebaKMT are hereby limited to a
period of 12 months from the date of delivery. Each component
supplied by SebaKMT within the context of warranty will also be
covered by this warranty for the remaining period of time but for
90 days at least.
Each measure to remedy a claim under warranty shall exclusively
be carried out by SebaKMT or an authorized service station.
To register a claim under the provisions of this warranty, the
customer has to complain about the defect, in case of an
immediately detectable fault within 10 days from the date of
delivery.
This warranty does not apply to any fault or damage caused by
exposing a product to conditions not in accordance with this
specification, by storing, transporting, or using it improperly, or
having it serviced or installed by a workshop not authorized by
SebaKMT. All responsibility is disclaimed for damage due to wear,
will of God, or connection to foreign components.
For damage resulting from a violation of their duty to repair or
re-supply items, SebaKMT can be made liable only in case of severe
negligence or intention. Any liability for slight negligence is
disclaimed.
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TF10PP Coupling Filter for Phase to Phase Fault Location with
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SebaKMT-TF10PP-640-Draft-Manual-200709
Table of Contents
1 Safety Advice 5
1.1 General Notes 5
1.2 General Cautions and Warnings 6
2 Technical Data 7
3 Scope of Delivery 8
4 Connection 9
5 Application 10
6 Twisted field method for detecting phase to phase faults
11
7 Procedure for phase to phase fault location using the
Vloc Pro Transmitter & TF10-PP-640, and Vloc Pro receiver
13
8 Troubleshooting failure of signal and fuses 15
9 Connection to LV Mains live 16
10 Photographic example of connection to LV Link Box 17
11 Disposal of old equipment 18
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SebaKMT-TF10PP-640-Draft-Manual-200709
1 Safety Advice
1.1 General Notes
Safety precautions This manual contains basic advice for the
installation and operation of the product. It is essential to make
this manual accessible to the authorised and skilled operator. He
needs to read this manual closely. The manufacturer is not liable
for damage to material or humans due to non-observance of the
instructions and safety advices provided by this manual.
Setting up and operating the system may only be done by
authorised and skilled personnel. According to DIN VDE 0104 (EN
50191) and DIN VDE 0105 (EN 50110) as well as the accident
prevention regulation (Unfallverhütungsvorschrift UVV), skilled
personnel is defined as a person who is qualified to work, judge
and realize dangers due to his professional education, knowledge
and experience and his knowledge of applicable regulations. Locally
applying regulations have to be observed.
Symbols used in this manual
Important instructions concerning the protection of staff and
equipment as well as technical safety within this document are
labelled with one of the following symbols:
Symbol Description
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
Notes have important information and useful tips on the
operation of your equipment. Non-observance may result in useless
measurement results.
Working with equipment of
Seba KMT
All electrical regulations of the country where the system is
operated have to be observed as well as national regulations for
prevention of accidents and existing regulations for the safety and
operation of equipment of the involved companies.
After working with the equipment, make sure to de-energise,
protect against re-energising, discharge, ground and short-circuit
the instrument and installations that have been worked on.
Original accessories ensure safe operation of the equipment. It
is not allowed and the warranty is lost if other accessories than
the original ones are used with the equipment.
Operating personal Only trained and/or instructed staff is
permitted to deal with this system and its peripherals. Keep any
other person away from it.
Only authorised persons with sufficient expertise are allowed to
operate the device.
Repair and maintenance
Repairs and service must only be done by SebaKMT or authorised
service departments of SebaKMT. SebaKMT recommends having the
equipment serviced and checked once per year at a SebaKMT service
location. For SebaKMT on-site support please contact our service
office for more information.
WARNING
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TF10PP Coupling Filter for Phase to Phase Fault Location with
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SebaKMT-TF10PP-640-Draft-Manual-200709
1.2 General Cautions and Warnings
Intended application Safe operation is only realised when using
the equipment for its intended purpose. Using the equipment for
other purposes may lead to human danger and damage of equipment of
involved installations.
The limits described under technical data may not be exceeded.
Operating products of SebaKMT in condensing environment may lead to
flash-over, danger and damage. The instruments should only be
operated under tempered conditions. It is not allowed to operate
SebaKMT products at direct contact with humidity, water or near
aggressive chemicals nor explosive gases and fumes.
Behaviour at malfunction of normal
operation
The equipment may only be used when working properly. When
irregularities or malfunctions appear that cannot be solved
consulting this manual, the equipment must immediately be put out
of operation and marked as not functional. In this case inform the
person in charge who should inform the SebaKMT service to resolve
the problem. The instrument may only be operated when the
malfunction is resolved.
Operation in traffic environment
To ensure safety for operators and traffic, the country-specific
regulations must be observed.
Fire fighting in electrical installations
• Recommended extinguishing agent: carbon dioxide (CO2)
• Carbon dioxide is electrically non conductive and does not
leave residue. It is safe to use in energized facilities as long as
the minimum distances are observed.
• It is essential to observe the safety instruction on the
extinguishing agent.
• Applicable is DIN VDE 0132.
Dangers when operating with HV
Special attention and safety-conscious behaviour is needed when
operating HV facilities and especially non-stationary equipment.
The regulations VDE 0104 about setting up and operation of electric
test equipment, i.e. the corresponding EN 50191 as well as
country-specific regulations and standards must be observed.
• Safety installations may not be by-passed nor deactivated.
• Operation requires minimum two people whereas the second
person must be able to activate the emergency stop in case of
danger.
• To avoid hazardous electric charges of metallic parts in the
vicinity, all metallic parts must be grounded.
• The equipment and all accessories must be connected according
to applicable standards VDE, EN or DIN as well as country-specific
regulations.
WARNING
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SebaKMT-TF10PP-640-Draft-Manual-200709
2 Technical Data
Pos. Item Value
1. Voltage withstand at output max. 100 V (+ 5%)
2. External voltage warning > 24 V ac
3. Input power max. 10 W
4. Frequency range 480 Hz J 10 kHz
5. Fuse value (internal fuses) Input 3.15 A slow Output 8.0 A
slow (6.3 x 32 mm US-standard)
6. Fuse value (Test Leads) 15A
7. Height 170 mm
8. Width 250 mm
9. Depth 120 mm
10. Weight 2.1 kg
11. IP-Protection according to EN 60529 IP 54
12. Protection class according to DIN VDE 014 Part 1
CAT IV 600V
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TF10PP Coupling Filter for Phase to Phase Fault Location with
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SebaKMT-TF10PP-640-Draft-Manual-200709
3 Scope of Delivery
� TF10PP-640 Coupling Filter for Phase to Phase fault location
with Audio Frequency Generators
� Carrying strap (short)
� Set of connecting cables VL TF 10 consisting of : Fused
alligator connecting clip (red, 10 A, 600 V, 50 kA) Fused alligator
connecting clip (black, 10 A, 600 V, 50 kA) Alligator clip (green /
yellow) Connecting lead for protective earth (green / yellow, 2
m)
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SebaKMT-TF10PP-640-Draft-Manual-200709
4 Connection
Always connect the protective earth before making any other
connection and take the protective earth off after all other
connections have been taken off.
Observe all safety regulations when handling energised LV !
input from protective AF external voltage AF generator earth
output warning light
2 internal 15A 250V Fuses (under bottom panel)
WARNING
WARNING
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TF10PP Coupling Filter for Phase to Phase Fault Location with
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SebaKMT-TF10PP-640-Draft-Manual-200709
5 Application
The TF 10-PP-640 filter allows the pinpointing of low impedance
(Short Circuit) Phase to Phase LV (Low Voltage) cable faults in
combination with an audio frequency cable locator receiver and
transmitter. The TF10PP-640 will allow a connected audio frequency
generator to feed its signal through the TF10PP filter onto an
energised pair of faulty phases of an LV cable. The maximum output
power of the audio frequency generator may not exceed 10 W. The
TF10PP-640 is designed for maximum efficiency to transmit current
into a phase to phase fault; some phase to phase faults are not
hard short circuit or are some distance away, so voltage may be
present on the faulty pair. The residual or induced voltage on a
faulty pair of phases rarely exceeds 20V; the TF10PP-640 will block
ac voltage up to 100V.
The TF10PP may also be applied to other cables like de-energised
medium voltage cables or communication cables to protect the AF
generator from external voltage induced on the target cable up to
100V.
The fuses inside the bottom cover protect the instrument against
voltage input from the AF generator side and against overload.
When connecting phase-to-phase the full current will return via
the fault within the same cable. This creates a magnetic field for
the "Twisted-Field-Method".
Please note that the output indications of the AF generator do
not coincide with the output of the TF10PP-640 (i.e. indicated
output current of AF generator is unequal to output current of
TF10PP-640). Maximum output current values are reached at
frequencies 640 Hz ... 10 kHz. Output current at lower frequencies
is drastically reduced.
red red
black
black
Vloc Pro Transmitteror (max. 10 W)
TF 10 filter
Underground cable with a Phase to
Phase short fault
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TF10PP Coupling Filter for Phase to Phase Fault Location with
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SebaKMT-TF10PP-640-Draft-Manual-200709
6 Twisted Field Method for detecting phase to phase faults
This method has been used for many years and is generally well
known. It was developed in the 1940s in the UK and the method
became known as the “Bimec” method at that time.
The Vloc Pro Phase to Phase fault location system uses the 10
Watt Vloc Pro transmitter feeding through the SebaKMT TF10PP-640
filter unit. The filter can be connected with insulated fused
connecting leads to live LV systems, and can withstand up to 100V
ac for locating and fault location. If the voltage present between
the faulty phases is above 20V, or the fault impedance above 10
Ohms the success of this technique may be limited.
For phase to phase fault location, the system is connected
across the two cores of the cable that are shorted at the
fault.
The twisted field effect is followed using the Vloc pro locator.
The twisted field effect will be present along the cable up to the
fault. If the fault is on a cable branch, the twisted field effect
will follow the branch and leave the main cable.
For verification before digging, it is advised the result may be
confirmed by repeating the fault location process from the other
end of the cable.
The twisted field method detects the resultant magnetic field
caused by two close together twisted conductors.
When the conductors are side by side, the resultant field on the
ground surface is at minimum; but when the two conductors are above
and below, the resultant field is at maximum.
The twist built in during the cable manufacturing process
results in the rise and fall of signal along the cable. When the
locator is carried along the cable at a brisk walking pace, the
cable twist effect will be seen at exactly regular intervals until
the fault position is reached, when the signal strength will change
significantly.
The actual change at the fault will be dependent on the position
of the phase to phase short within the cable; it may be shown as a
maximum or just stop, but in any case the twist effect will be
absent after the fault.
Search Coil Fault
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SebaKMT-TF10PP-640-Draft-Manual-200709
If a cable joint is on the fault location route, this will
result in a signal that may remain the same, or change dramatically
for one or two paces, and the regular pattern will resume unless
the fault is in the cable joint or on a branch taken off the cable
joint.
In all cases, before starting fault location, it is important
that the operator is familiar with network conditions and
layout.
Before starting to use this equipment on live systems the
operator must be understand and carry out company safety
procedures.
Search Coil
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SebaKMT-TF10PP-640-Draft-Manual-200709
7 Procedure for phase to phase fault location using Vloc Pro TX
and TF10PP-640 and Vloc Pro Receiver
Prior to connecting the equipment and operating it to search for
the fault, the cable route main and branches must be understood,
traced and marked, including sudden cable depth changes up and
down. For this method to work efficiently, the route must be
followed at a consistent and brisk walking pace, necessitating
confidence in the route.
Before starting to use this equipment on live systems the
operator must understand and carry out company safety procedures
for working on live systems.
Connecting the TF10PP-640 and Vloc Pro transmitter
1. Connect the flying leads from the TF10PP to the Vloc Pro TX
transmitter.
2. Ground the TF10PP-640 to the station ground or the link box
ground depending on application. Using the earth lead via the
protective earth connection point.
3. Plug in the fused leads to the TF10PP-640 and short the ends
together
4. Switch on the Vloc Pro TX and press the F key until 640 Hz
frequency is selected. Switch off the TX.
5. Observing your company safety instructions, connect the fused
leads’ clips to the faulty phases.
6 Switch on the Vloc Pro TX.
7 Using the +/- keys, increase Vloc Pro TX power output until
output signal of about 6-700mA or more is displayed. Note that the
output current displayed on the Vloc Pro TX does not correspond to
the actual TF10PP-640 output, which may be higher.
WARNING
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SebaKMT-TF10PP-640-Draft-Manual-200709
Using the Vloc Pro receiver.
1. Prior to this procedure, use the Vloc Pro receiver to
accurately trace and mark the cable route. This may be done using
the signal clamp with the transmitter, or using the 50Hz power
mode.
2. Switch on the Vloc Pro receiver. Repeatedly press the F key
until frequency is set to 640Hz.
3. Press the antenna /enter key until either peak mode or broad
mode is selected.
4. Hold the receiver at your side, and place it above the known
route of the faulty cable. Hold it so that it’s handle is above and
perpendicular to the cable, that is 90 degrees twisted from the
normal cable tracing orientation.
5. Walk along the cable route for a few metres to ensure that a
rising and falling signal is available.
6. Adjust the receiver gain using the blue + or - keys so that
the bargraph on the screen is filled at maximum signal and almost
empty at minimum signal.
7. Keeping the Vloc Pro receiver handle across the marked cable
route, walk along the route, observing the rising and falling
signal.
8. Follow this rising and falling signal and mark the position
where it stops.
9. If possible, repeat the whole process from the other end of
the cable to confirm the fault position.
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SebaKMT-TF10PP-640-Draft-Manual-200709
8 If there seems to be no cable lay effect, check output
connections then the fuses in the fused leads and the fuses in the
base of the TF10-PP-640.
If no multi-meter is available to check the 10A fuses in the
fuse-holder of the fused leads, note that operator can use the
built in multi-meter function in the Vloc Pro transmitter.
Disconnect the leads from the filter and connect them via the
adapter lead to Vloc Transmitter. Short the fused ends of the fused
leads together. Press the (i) key on the transmitter display shows
Ohms to measure the leads. If correct and functioning, the Ohms
display will show (0). If open due to a blown fuse ohms will show
(999).
This simple test above confirms that the fused leads will pass
current.
To confirm TF10-PP-640 blocking filter has current output,
connect the filter to the Vloc Pro transmitter. Then connect the
fused leads to the TF10-PP-640 blocking filter and short circuit
the ends of the fused leads after arranging them in a loop. Switch
on the Vloc pro receiver and set frequency to 640Hz, set power
output to 2 steps. Use the Vloc Pro receiver to detect the signal
from the loop. Set antenna mode to peak and the gain to between 25
and 30.
Wave the Vloc Pro receiver across the loop formed by the fused
leads; the signal will be strong. There will also be some signal
radiated by the TF10-PP-640 filter. The signal will also be strong
when the blade is across the cable.
If there is no current on the cable loop, check both of the
fuses in the TF10-PP. There are 2 15A 250V fuses in fuseholders
mounted under the base cover of the TF10-PP-640
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SebaKMT-TF10PP-640-Draft-Manual-200709
9 Using the Vloc Pro TX for cable locating purposes on live LV
mains.
The live mains plug connector assembly is provided as an
optional extra accessory with some phase to phase kits. It allows
the Vloc Pro TX to be connected vis the live mains plug connector
to a live mains socket in a building.
The TF2-M may be used with the mains plug connector assembly,
and powered by the HPL10 transmitter, but output power should be
limited to 2 watts.
The mains plug connector assembly should not be used with the
TF10PP on live systems as the 100V maximum voltage rating of the
TF10PP may be exceeded.
WARNING
WARNING
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TF10PP Coupling Filter for Phase to Phase Fault Location with
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10
Note; Grounding connection not clearly shown on the photos.
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10 Disposal of Old Equipment
If the SebaKMT products reach the end of the life span, they
should be short-circuited and environmentally friendly disposed or
recycled.
We are pleased to help you finding the environmentally friendly
way. Please contact [email protected].
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